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Finding the Fourth Proportional to 93,064.91, 128,501.66 and 71,520.53

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Solution

The fourth proportional to 93,064.91, 128,501.66 and 71,520.53 is: 98,753.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,064.91 : 128,501.66 = 71,520.53 : x
  2. Step 2: Convert to fraction form
    93,064.91/128,501.66 = 71,520.53/x
  3. Step 3: Cross multiply
    93,064.91x = 128,501.66 × 71,520.53
  4. Step 4: Simplify right side
    93,064.91x = 9,190,506,829.08
  5. Step 5: Solve for x
    x = 9,190,506,829.08/93,064.91
  6. Step 6: Final answer
    x = 98,753.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.